Din916 Hex Socket Set Screw 1)TREATMENT: BLACK TREATMENT 2)PACKING TERM: 25KG CARTON,BULK 3)SIZE: M3-M20 DIN913,DIN914,DIN915,DIN916 Hex socket screw1)TREATMENT: BLACK TREATMENT2)PACKING TERM: 25KG CARTON,BULK3)SIZE:M3-M204)4.8 GRAD ,8.8 GRADE,10.9GRADE,12.9GRADE DIN916 Hex scoket screws with cup point